Gobernador TG-13yTG-17

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<p>04042C</p> <p>TG-13 and TG-17 Governors</p> <p>Installation and Operation Manual</p> <p>Manual 04042C</p> <p>WARNINGRead this entire manual and all other publications pertaining to the work to be performed before installing, operating, or servicing this equipment. Practice all plant and safety instructions and precautions. Failure to follow instructions can cause personal injury and/or property damage. The engine, turbine, or other type of prime mover should be equipped with an overspeed (overtemperature, or overpressure, where applicable) shutdown device(s), that operates totally independently of the prime mover control device(s) to protect against runaway or damage to the engine, turbine, or other type of prime mover with possible personal injury or loss of life should the mechanical-hydraulic governor(s) or electric control(s), the actuator(s), fuel control(s), the driving mechanism(s), the linkage(s), or the controlled device(s) fail.</p> <p>CAUTIONTo prevent damage to a control system that uses an alternator or battery-charging device, make sure the charging device is turned off before disconnecting the battery from the system. Electronic controls contain static-sensitive parts. Observe the following precautions to prevent damage to these parts. Discharge body static before handling the control (with power to the control turned off, contact a grounded surface and maintain contact while handling the control). Avoid all plastic, vinyl, and Styrofoam (except antistatic versions) around printed circuit boards. Do not touch the components or conductors on a printed circuit board with your hands or with conductive devices.</p> <p>IMPORTANT DEFINITIONSWARNINGindicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. CAUTIONindicates a potentially hazardous situation which, if not avoided, could result in damage to equipment. NOTEprovides other helpful information that does not fall under the warning or caution categories.</p> <p>Woodward Governor Company reserves the right to update any portion of this publication at any time. Information provided by Woodward Governor Company is believed to be correct and reliable. However, no responsibility is assumed by Woodward Governor Company unless otherwise expressly undertaken.</p> <p> 1984 by Woodward Governor Company All Rights Reserved</p> <p>Manual 04042</p> <p>TG-13 and TG-17 Governors</p> <p>ContentsCHAPTER 1. GENERAL INFORMATION ........................................................... 1Introduction.............................................................................................................1 Description..............................................................................................................1 References .............................................................................................................3</p> <p>CHAPTER 2. INSTALLATION.......................................................................... 5Introduction.............................................................................................................5 Receiving................................................................................................................5 Storage ...................................................................................................................5 Drive-Shaft Rotation ...............................................................................................5 Changing Drive-Shaft Rotation...............................................................................6 Governor Mounting...............................................................................................14 Linkage Attachments ............................................................................................15 Terminal Shaft ..............................................................................................15 Speed Setting Linkage .................................................................................15 Heat Exchanger Installation .................................................................................15 Oil Supply .............................................................................................................16 When is a Heat Exchanger Necessary? ..............................................................19</p> <p>CHAPTER 3. GOVERNOR OPERATION AND ADJUSTMENTS .......................... 21Introduction...........................................................................................................21 Initial Operation ....................................................................................................21 Speed Droop ........................................................................................................21 Droop Adjustment.................................................................................................22</p> <p>CHAPTER 4. PRINCIPLES OF OPERATION ................................................... 25Introduction...........................................................................................................25 Description of Operation.......................................................................................25 Oil Pressure and Distribution........................................................................25 Ballhead Operation .......................................................................................25 Pilot-Valve Function......................................................................................26 Droop-Adjusting Lever Function ...................................................................26</p> <p>CHAPTER 5. TROUBLESHOOTING ............................................................... 29Introduction...........................................................................................................29 Visual Inspection ..................................................................................................29 Definitions.............................................................................................................29</p> <p>CHAPTER 6. REPLACEMENT PARTS ........................................................... 33Replacement Parts Information............................................................................33 Replacement Parts List for Figure 6-1 .................................................................33 Replacement Parts List for Figure 6-2 .................................................................36 Replacement Parts List for Figure 6-3 .................................................................37 Replacement Parts List for Figure 6-4 .................................................................39 Replacement Parts List for Figure 6-5 .................................................................41</p> <p>Woodward</p> <p>i</p> <p>TG-13 and TG-17 Governors</p> <p>Manual 04042</p> <p>ContentsCHAPTER 7. SERVICE OPTIONS ..................................................................43Product Service Options.......................................................................................43 Replacement/Exchange................................................................................43 Flat Rate Repair............................................................................................44 Flat Rate Remanufacture..............................................................................44 Returning Equipment for Repair...........................................................................44 Packing a Control .........................................................................................44 Return Authorization Number .......................................................................45 Replacement Parts ...............................................................................................45 How to Contact Woodward...................................................................................45 Engineering Services............................................................................................46 Technical Assistance............................................................................................47</p> <p>Illustrations and TablesFigure 1-1. Governor Work Output.........................................................................1 Figure 1-2. TG-13 Governor ...................................................................................2 Figure 2-1. Pump-Housing Assembly.....................................................................6 Figure 2-2. Pump -Housing Assembly....................................................................7 Figure 2-3. Location of Pump-Drive Pin .................................................................7 Figure 2-4. Pump-Housing Assembly.....................................................................8 Figure 2-5. Setup for Clockwise Rotation of the Governor Drive Shaft..................8 Figure 2-6. Setup for Counterclockwise Rotation of the Governor Drive Shaft .....9 Figure 2-7a. TG-13/TG-17 Outline Drawing.........................................................10 Figure 2-7b. TG-13/TG-17 Outline Drawing.........................................................11 Figure 2-7c. TG-13/TG-17 Outline Drawing .........................................................12 Figure 2-7d. TG-13/TG-17 Outline Drawing.........................................................13 Figure 2-8. Heat-Exchanger Tap Locations .........................................................16 Figure 2-9. Heat-Exchanger Piping Schematic ....................................................16 Figure 3-1. Droop-Adjusting Lever Movement .....................................................23 Figure 4-1. TG-13 and -17 Schematic Diagram ...................................................27 Figure 6-1. Parts for the TG-13 and -17 Governor, Cast-Iron Case, Screw Speed Setting..............................................................................................35 Figure 6-2. Parts for the TG-13 and -17 Cover Assembly (Lever Speed Setting) for Use with Cast-Iron Case TG-13 and -17....................................36 Figure 6-3. Parts for the TG-13 and -17 Governor. Die-cast Aluminum Case. Screw Speed Setting .......................................................................38 Figure 6-4. Parts for the TG-13 and -17 Governor with Extended Drive Shaft, Die-cast Aluminum Case, Screw Speed Setting .............................40 Figure 6-5. Parts for the TG-13 and -17 Cover Assembly (Lever Speed Setting), for Use with Aluminum Case TG-13 and 17..................................41 Table 2-1. Oil Chart ..............................................................................................18 Table 2-2. Viscosity Comparisons........................................................................18</p> <p>ii</p> <p>Woodward</p> <p>Manual 04042</p> <p>TG-13 and TG-17 Governors</p> <p>Chapter 1. General InformationIntroductionThis manual 04042 provides general information, installation, operation and adjustments, principles of operation, troubleshooting and replacement parts, for the Woodward TG-13 and TG-17 governors.</p> <p>DescriptionThe Woodward TG-13 and TG-17 are mechanical-hydraulic speed droop governors for controlling steam turbinesapplications where isochronous (constant-speed) operation is not required. The TG-13 and TG-17 governors have a full 40 degrees of maximum terminalshaft travel. Recommended travel from the no load to the full load position is 2/3 of full governor travel. See Figure 1-1 for a graphic representation of maximum work capacity for the governors and related governor terminal shaft travel information.</p> <p>Maximum work capacity over full governor travel of 40 is 12.2 ft-lb for the TG-13 and 17.5 ft-lb for the TG-17. See above for recommended governor output travel. In special applications, min and max prime mover stops may be outside the governor stops.</p> <p>Figure 1-1. Governor Work Output Woodward 1</p> <p>TG-13 and TG-17 Governors</p> <p>Manual 04042</p> <p>Governor output is provided through a serrated terminal shaft extending from both sides of the case. The internal pump for the governors is sized to operate over standard speed ranges: 1100 to 2400 rpm 2400 to 4000 rpm 4000 to 6000 rpm The TG-13 governor operates with 1034 kPa (150 psi) internal oil pressure, and the TG-17 operates with 1379 kPa (200 psi) internal oil pressure. Either governor is set to the speed range specified by the customer at time of order. The high-speed governor (4000 to 6000 rpm) may require a heat exchanger in some applications (see end of Chapter 2, When is a Heat Exchanger Necessary?). Both governors are capable of controlling at lower-thanspecified speed range with some loss of output torque and performance. The governors are available with either a cast-iron case or a die-cast aluminum case. Speed droop is required for stable governor operation. Droop is factory set, but internally adjustable. Two means of speed setting are available. Screw speed setting is standard. Lever speed setting is optional and provided by a serrated shaft assembly extending from both sides of the cover.</p> <p>NOTEThe TG-13 and TG-17 governors are identified as either a screw speed setting or as a lever speed setting governor (see Figure 1-2).</p> <p>Figure 1-2. TG-13 Governor (screw speed setting, left; lever speed setting, right)</p> <p>2</p> <p>Woodward</p> <p>Manual 04042</p> <p>TG-13 and TG-17 Governors</p> <p>Governor drive shaft rotation for both governors is single direction only. In both the cast iron and the die-cast aluminum governors, rotation can be changed in the field. In the cast iron governor, it must be changed internally, and in the diecast aluminum governor, it can be changed externally by removing four screws and rotating the pump housing 180 degrees (see Chapter 2). Governor maintenance is minimal due to few moving parts, weatherproof design, and self-contained oil supply. The governor drive shaft operates a gerotor oil pump. Internal oil pump pressure is regulated by a relief valve/accumulator. The oil sight gauge installed on each side of the governor case makes oil condition and oil-level checking simple.</p> <p>ReferencesAdditional helpful information can be found in these Woodward publications, available online (www.woodward.com/ic): Number 04038 25071 25075 36641 Title TG-13 and TG-17 Governors product specification Oils for Hydraulic Controls Commercial Preservation Packaging for Storage of MechanicalHydraulic Controls Governor Oil Heat Exchanger, Remote &amp; Integral Types</p> <p>Woodward</p> <p>3</p> <p>TG-13 and TG-17 Governors</p> <p>Manual 04042</p> <p>4</p> <p>Woodward</p> <p>Manual 04042</p> <p>TG-13 and TG-17 Governors</p> <p>Chapter 2. InstallationIntroductionUse care while handling and installing the TG-13 or TG-17 governor. Be particularly careful to avoid striking the drive shaft, terminal shafts, speed-setting shafts, or adjusting screw. Abuse can damage seals, internal parts, and factory adjustments. Do not re...</p>